Domestic Refrigeration Units Maintenance And Repair

Refrigeration And Air Conditioning · Level 6  ·  7 Chapters

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What Domestic Refrigeration Units Maintenance And Repair covers

In this unit, you will be able to confidently maintain and repair domestic refrigeration units by selecting the right tools and following precise manufacturer guidelines. You’ll master safe and environmentally responsible practices, from servicing components to performing refrigerant recovery and pressure tests. By the end, you’ll be skilled at diagnosing issues, carrying out repairs, and keeping your work area safe and organized, ready to tackle real-world refrigeration challenges with professionalism and care.

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Careers after Domestic Refrigeration Units Maintenance And Repair

Mastering Domestic Refrigeration Units Maintenance and Repair opens doors to a vibrant and essential career path in Kenya’s growing economy. Refrigeration is crucial across many sectors, from preserving food in agribusiness to ensuring comfort in hospitality. By developing these skills, you become a trusted expert who keeps homes, businesses, and industries running smoothly.

  • Jua Kali sector: Many technicians run their own small workshops fixing fridges and freezers for households and small businesses. Skilled repairs mean steady income and the opportunity to grow into a respected local entrepreneur.
  • Hospitality industry: Hotels, lodges, and restaurants in Kenya rely on refrigeration to store perishables. Your expertise ensures their operations never stop, making you a valuable employee or contractor.
  • Agribusiness and KTDA factories: Proper refrigeration preserves tea and fresh produce, reducing waste and increasing profits. Working here means contributing directly to Kenya’s food security and export quality.
  • Matatu industry and transport companies: Refrigerated transport units need regular maintenance to keep goods fresh on the move. Your skills help keep Kenya’s supply chains efficient.
  • County and national government projects: Public health and food safety initiatives require refrigeration experts to maintain equipment in clinics and cold storage facilities, offering stable employment opportunities.
  • KenGen and industrial settings: Large-scale facilities use refrigeration for equipment cooling and process management, providing specialized job roles with competitive pay.

By mastering refrigeration maintenance, you not only secure a job but also gain the power to start your own business, support your community, and contribute to Kenya’s economic growth. Your skills keep the country’s heartbeat steady—one cool unit at a time. Keep learning, stay sharp, and your future will be bright and full of opportunity!

Chapters

What Domestic Refrigeration Units Maintenance And Repair covers: 49 main topics in 4 chapters

1. Identify and repair faults in refrigeration units

  1. 1.1 Fundamentals of refrigeration lagrams, charts and manuals
  2. 1.2 Identification of faults
  3. 1.3 Leaks
  4. 1.4 High current
  5. 1.5 Under performance
  6. 1.6 Unusual noise
  7. 1.7 Vibrations
  8. 1.8 Electrical parts, components, functions and operations
  9. 1.9 Procedures for testing electrical components
  10. 1.10 Troubleshooting electrical faults
  11. 1.11 Procedures for repairing/replacing electrical components
  12. 1.12 Mechanical parts, components, functions and operation
  13. 1.13 Troubleshooting mechanical faults
  14. 1.14 Repair of refrigeration units

2. Carry out refrigerant recovery

  1. 2.1 Type of refrigerant
  2. 2.2 Terms and concepts of refrigerant recovery
  3. 2.3 Tools, equipment and materials
  4. 2.4 Decommissioning procedures for hydrocarbon RAC systems
  5. 2.5 Safe procedures for handling potentially hazardous system materials, including hydrocarbon refrigerants
  6. 2.6 Calculate the safe fill weight for the recovery cylinder (density difference between HFCs and HCs)
  7. 2.7 Preparation for recovery
  8. 2.8 Pressure testing of the cylinder
  9. 2.9 Connecting manifold gauge set
  10. 2.10 Performing refrigerant recovery

3. Service refrigeration units

  1. 3.1 Identification and interpretation of refrigeration symbols
  2. 3.2 Interpretation of drawings
  3. 3.3 Fundamentals of refrigeration cycle
  4. 3.4 Refrigeration unit components
  5. 3.5 Operating parameters of refrigeration systems e.g. temperature, pressure, current
  6. 3.6 Types of refrigerants
  7. 3.7 Types of lubricants
  8. 3.8 Safe handling of refrigerants (including hydrocarbons)
  9. 3.9 Safety in handling nitrogen gas
  10. 3.10 Servicing/replacing components
  11. 3.11 Service and maintenance procedures for hydrocarbon RAC Units
  12. 3.12 Specify appropriate 'like for like' replacement components on hydrocarbon systems for the following:
  13. 3.13 Maintaining the integrity of sealed electrical enclosures
  14. 3.14 Methods for accessing and sealing hydrocarbon systems
  15. 3.15 Service, maintenance and fault diagnosis procedures on hydrocarbon systems including:
  16. 3.16 industry standards/codes of practice
  17. 3.17 information from system users
  18. 3.18 State the requirements for the safe use of vacuum pumps when evacuating hydrocarbon systems
  19. 3.19 Explain the procedure for safely removing and replacing hydrocarbon RAC system components
  20. 3.20 Types of Ozone depleting substances (ODS)
  21. 3.21 Effects of refrigerants on climate change

4. Pressure testing refrigeration units

  1. 4.1 Pressure strength test
  2. 4.2 Pressure tightness test
  3. 4.3 Applicable ISO standards
  4. 4.4 KS ISO 5149-2:2014 Para 5.3

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Beyond the syllabus

Other units in Module I